Assessing automaticity in audiovisual speech integration: evidence from the speeded classification task

TitleAssessing automaticity in audiovisual speech integration: evidence from the speeded classification task
Publication TypeJournal Article
Year of Publication2004
AuthorsSoto-Faraco S, Navarra J, Alsius A
JournalCognition
Volume92
Issue3
PaginationB13–23
Date Published07/2004
ISSN0010-0277
KeywordsAdult, Auditory Perception, Auditory Perception: physiology, Female, Humans, Male, Mental Processes, Reaction Time, Speech Perception, Speech Perception: physiology, Task Performance and Analysis, Visual Perception, Visual Perception: physiology
Abstract

The McGurk effect is usually presented as an example of fast, automatic, multisensory integration. We report a series of experiments designed to directly assess these claims. We used a syllabic version of the speeded classification paradigm, whereby response latencies to the first (target) syllable of spoken word-like stimuli are slowed down when the second (irrelevant) syllable varies from trial to trial. This interference effect is interpreted as a failure of selective attention to filter out the irrelevant syllable. In Experiment 1 we reproduced the syllabic interference effect with bimodal stimuli containing auditory as well as visual lip movement information, thus confirming the generalizability of the phenomenon. In subsequent experiments we were able to produce (Experiment 2) and to eliminate (Experiment 3) syllabic interference by introducing 'illusory' (McGurk) audiovisual stimuli in the irrelevant syllable, suggesting that audiovisual integration occurs prior to attentional selection in this paradigm.

URLhttp://dx.doi.org/10.1016/j.cognition.2003.10.005
DOI10.1016/j.cognition.2003.10.005